/*
 * Copyright 2007-2008 Brian Cavalier
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.bc.iterate;

/**
 * TransformTest is a {@link org.bc.iterate.Test} that applies a {@link org.bc.iterate.Transform} then invokes
 * another {@link org.bc.iterate.Test} on the transformed value.
 * @author Brian Cavalier
 */
public class TransformTest<T> implements Test<T> {

	private Transform<T> _transform;
	private Test<T> _test;
	
	/**
	 * TransformTest Constructor that chains the supplied {@link org.bc.iterate.Transform}
	 * to the supplied {@link org.bc.iterate.Test}
	 */
	public TransformTest(Transform<T> t, Test<T> test) {
		_transform = t;
		_test = test;
	}
	
	/**
	 * Applies the {@link org.bc.iterate.Transform} then the performs the {@link org.bc.iterate.Test}.
	 *
	 * @param item Item to Transform then pass to the {@link org.bc.iterate.Test}
	 * @return true iff the newly-transformed item passes the {@link org.bc.iterate.Test}.
	 */
	public boolean go(T item) {
		return _test.go(_transform.apply(item));
	}
}
